Cucumbers

Could someone please give me some info on what is going on here, I bought a pack of a few cucumber seeds I dont have the packaging anymore, but have grown cucumbers in previous years with no problems. This time they have been growing ball type fruit, of which I removed the first few as I thought they had not been properly pollenated, continued to pollinate myself and eventually the bees came to help. The internet hasn't been much help and people I ask all try to tell me they're melons etc, but I know I bought cucumber seeds. Any help will be appreciated.

Courgette Leaves are very different than pumpkin. The developing courgette looks a lot thinner/smaller and more green than a developing pumpkin. Sorry I don't have any at the moment, just unopened flowers.

I find that different courgette varieties can have quite different leaf shapes. Yours @HouseFinch are quite ‘finely cut’ but mine (taken this morning as the sun came up) are more like those in the OP’s post

Mine are the variety ‘Romanesco’.

“I am not lost, for I know where I am. But however, where I am may be lost.” Winnie the Pooh

I’ve never grown pumpkins but aren’t they vines with curly tendrils to cling on? Can’t see any of those on the OP’s photo, so still think it’s a courgette. Doesn’t really matter tho, as either way, it’s not a cucumber!